Ukwethulwa kwesixhumi esibonakalayo se-LVDS kwesikrini se-TFT-LCD LCD

I-LVDS Interface Definition

Incazelo yesixhumi esibonakalayo se-LVDS isho umsebenzi wephinikhodi yokufaka yokuphela kwe-LVDS ohlangothini lwephaneli ye-LCD, engafundwa ngokujwayelekile ngokuthinta idatha yefekthri yokuqala yesikrini se-LCD (evame ukubizwa ngokuthi incwadi yokucaciswa kwesikrini). Nakuba amazinga ahlukene esiNgisi okusebenza kwesikrini sesikrini se-LCD ahlukile, Kodwa akunzima ukubona lokho, uma ukwahlulela ngokuhleleka kwezinhlamvu nezinombolo zayo ezibalulekile, isibonelo, imodeli ethile yesikrini se-LCD ye-CLAA170EA02, Bheka ithebula lencazelo yesixhumi esibonakalayo elinikezwe umenzi, Njengoba kungabonwa kukholamu emfushane ngesiNgisi, Nge-RXO ne-RXE, isiteshi ngasinye sinenombolo ethi “~ 1 ″ inenombolo yedatha engu-3″ yedatha engu-3″ amasignali (RXOC noma i-RXEC), Lokhu kubonisa ukuthi isikrini se-LCD siyisikrini esingu-30-pin, dual, 8-bit, Akunzima futhi ukubona umsebenzi wephinikhodi, Okusho ukuthi, "RXO0-" imele isethi yokuqala yedatha 1-, "RXO0 +" isho isethi yokuqala yedatha: 1 +; I-“RXE0-” ikhombisa isethi yesibili yedatha 1-, “RXE0 +” ikhombisa isethi yesibili yedatha 1 +, Yonke enye, njalonjalo. Isixhumi esibonakalayo se-LVDS sifaka i-LVDS isiNgisi esifushane esithi “Low Voltage Differential Signaling” okusho isiginali ehlukile yengcindezi ephansi. I-LVDS inqoba ububi bokudlulisa ukusetshenziswa kwamandla okuphezulu kwe-broadband kanye nokuphazamiseka kazibuthe kwe-EMI kumodi yezinga le-TTL, futhi iyimodi yokudlulisa isignali yevidiyo yedijithali. Isixhumi esibonakalayo esikhiphayo se-LVDS sisebenzisa i-voltage ephansi kakhulu (cishe 350mV) ukuze idlulise idatha ngomehluko ezintanjeni ezimbili ze-PCB noma ipheya yezintambo zebhalansi. Isixhumi esibonakalayo se-LVDS sidlulisela isignali ku-PCB ehlukile noma ikhebuli yebhalansi ngenani lamakhulu ama-megbit ngomzuzwana. Ngenxa ye-voltage ephansi kanye nemodi yokushayela yamanje ephansi, inezinzuzo zomsindo ophansi nokusetshenziswa kwamandla aphansi. Ku-TV yombala we-LCD, ulayini we-LVDS usebenzisa ikhebula lebhalansi kakhulu, empeleni uwumugqa wokubhanqa osontekile. Ingxenye yesifunda se-LVDS yesekethe ye-LCD yombala we-TV noma isibonisi sombala ekuqoshweni kokuqala kwamasiginali okokufaka (njenge-TV, i-AV, njll.), ukuze kutholwe isignali ye-RGB, inqubo yayo yokucubungula iyafana ne-TV yombala ojwayelekile, bese kuthi ngokuguqulwa kwe-RGB-LVDS, isignali ye-LVDS ephumayo, ithunyelwe esikrinini se-LCD. Njengoba i-TFT esikrinini se-LCD ibona kuphela isignali ye-TTL (RGB), i-LVDS ethunyelwe kusikrini se-LCD idinga ukuqopha isignali ye-TTL. Kuyabonakala ukuthi umjikelezo wesixhumi esibonakalayo we-LVDS uhlanganisa izingxenye ezimbili: isekethe yesixhumi esibonakalayo se-LVDS ohlangothini lwebhodi le-motherboard (i-LVDS transmitter), kanye nesekethe yesixhumi esibonakalayo se-LVDS (isitholi se-LVDS) ohlangothini lwephaneli ye-LCD. Itheminali yokudlulisa i-LVDS iguqula isignali ye-TTL ibe isignali ye-LVDS, bese idlulisela isignali ku-LVDS yokuqopha IC ohlangothini lwephaneli ye-LCD ngekhebula yomugqa noma ikhebula eliguquguqukayo phakathi kwephaneli yokushayela kanye nephaneli ye-LCD), iguqule isignali ye-serial ibe isignali ehambisanayo yezinga le-TTL, bese iyithumela kusilawuli sesikhathi sedrayivu ye-LCD.